Malicious PDF — malware analysis report

Static analysis result for SHA-256 03e085520561a90a…

MALICIOUS

PDF

54.1 KB Created: 2020-08-15 03:35:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 105a882bda953ed6103cf032b1fc7642 SHA-1: 5df6b5ee7cbd8efdb656575303cc006ce86fb6d4 SHA-256: 03e085520561a90a48964ce6b7a8bcbecfb50eca9032132b082728e1289d61dd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains a URL that appears to be a lure for 'Sony movie channel tv guide today'. The presence of numerous links, as noted by PDF_SEO_LINK_FARM, suggests an attempt to distribute malicious content or engage in SEO manipulation. No scripts were extracted, but the redirection behavior is indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=sony+movie+channel+tv+guide+today
    • http://gelopuv.tylewiscancerfoundation.org/uploads/1/3/1/1/131163599/gabufo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/5097/5910/files/22431226998.pdf
    • https://cdn.shopify.com/s/files/1/0435/5329/2440/files/abstract_algebra_an_introduction_3rd_edition_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0433/2702/9400/files/5966047485.pdf
    • https://cdn.shopify.com/s/files/1/0429/9823/5289/files/answered_prayers_capote_review.pdf
    • https://cdn.shopify.com/s/files/1/0438/4456/7197/files/betrayal_at_baldur_s_gate_secrets_of_survival.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1013/files/58047077657.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fisebupujavilugux.pdf
    • https://cdn.shopify.com/s/files/1/0430/3536/1442/files/fawoluruliromulezila.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1637/files/29558414220.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008566.bin
1d7b74ed6839d95f85d0dc613d3918b0768b0db70a6bf0a7ab0a8150216fd27e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8566 5228 bytes
font_01_sfnt_off000096fd.bin
304020056170ad7e5b2cc9dc0272d173642e6983aacea28393b2d87b2c5d0108
pdf-font-stream PDF embedded font (sfnt) at offset 0x96FD 11868 bytes
font_02_sfnt_off0000bdce.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xBDCE 4324 bytes